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Derivate

madidus from Colombia -

Hi, I would like to know how to derivate using a dsPIC20F2012.
The ADC module is set up and working. But I don´t know how to manipulate that data in order to derivate. I tried to use de basic definition of a discrete derivate and it did not work.

Comment #1 madidus from Colombia -

Hi, I would like to know how to derivate using a dsPIC20F2012.
The ADC module is set up and working. But I don´t know how to manipulate that data in order to derivate. I tried to use de basic definition of a discrete derivate and it did not work.

Comment #2 Fabio from Bogota, Colombia (South America) -

No creo que ese dsPIC te sirva, ya que tiene muy poca memoria.
Paa derivar tienes que llevar la funcion o operaciones algebraicas simples usando alguna transformada.

Comment #3 jgpeiro (213.96.206.86) -

para derivar una funcion es mucho mas facil utilizar la definicion de derivada dif(f(x), x) = lim((f(x+h)-f(x))/h, h, 0), o si es en tiempo discreto puedes usar us equivalente que es la primera diferencia Ax[n] = x[n] - x[n-1]

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